Bobbin



L.. F. BURLEIN Jan. 29, 1952 BOBBIN Filed July 413, 1948 .w n? mw N f I?i fw, @om y w, /N

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Patented Jan. 29, 1952 UNITED STATES PATENT OFFICE BOBBIN Lester F.Burlein, Honesdale, Pa., assigner to Cloverleaf-Freeland Corporation,Honesdale, Pa., a corporation of Pennsylvania Application July 13, 1948,Serial No. 38,385

14 Claims. l

The present invention relates to bobbins ano. spools such for instanceas those used in the textile industry but the invention is not limitedto any particular use as it is applicable to spools or bobbins ofdifferent sorts and kinds irrespective of the particular use to whichthey are to be put.

One of the features of the invention is the provision of novel means forsecuring heads to bobbins and therefore the primary object of theinvention is the provision of a novel arrangement or method for quickly,easily and satisfactorily removably securing heads to bobbins or spools.

Y A further object of the invention is the provision of a bobbin orspool construction to simplify and accordingly reduce the cost offabrication and the ultimate sales price of bobbins or spools whichobject is in part accomplished by making the bobbin or spool parts suchthat they can for the most part be produced on punch presses.

Another and further object of the invention is the provision of a spoolor bobbin the correct assembly of which is extremely simple and can beaccomplished with a minimum of labor.

Another and still further object of the` invention is the production ofa bobbin or spool constructed in a manner whereby any part thereof canbe quickly and easily removed and replaced thus giving to the bobbins orspools high salvage value in that they can be maintained in use throughreplacement of worn or damaged parts.

A still further object of the invention is the provision of bobbins orspools having extreme flexibility in that the principle of attaching theheads of the bobbins is applicable to any type of bobbin regardless ofthe particular application or use to which the bobbin or spool is to beput or the speed at which it is to be rotated which latter attribute ispresent due to the fact that the bobbins or spools are dynamicallybalanced units. Y

Other objects, advantages, and novel features of construction willappear from thefollowing description when read in the light of theaccompanying drawings and will be apparent to those skilled in andfamiliar with the art.

In the drawings:

Fig. 1 is an end View of a bobbin embodying the present invention.

Fig. 2 is alongitudinal sectional view of the bobbin of Fig. 1. F

Fig. 3 is a horizontal sectional view on the line 3 3 of Fig. 2 lookingin the direction indicated bvyarrows,

Fig. 4 is a View in side elevation of a modilled form of the invention,a portion of the View being broken away and shown in longitudinalsection.

Fig, 5 is a further modied form of `the invention as it might be appliedto take-ups, the bobbin being illustrated in side elevation and aportion of the view broken away and shown in longitudinal section.

Describing the form of the invention illustrated in Figs. 1 to 3, thebobbin barrel A is a hollow round open-ended tube-like member providedinternally adjacent, but short of, each of its ends with acircumferential groove I in which is removably mounted but retainedunder resilient tension a metallic retaining ring B. The barrel may bemade of metal or any other suitable material and although the retainingring is preferably made of metal it could be composed of any suitableresilient material having adequate rigidity.

The retaining ring falls just short of being a complete circle and has across sectional configuration and thickness to coincide with theinternal configuration and dimensions of the groove l. The ring has twofree ends terminating in ears 2 and 3 each of which is provided with ahole or passageway 4. Opposite the ears at the point 5 the ring is ofits greatest width. From this point in each direction toward its freeends the ring is of diminishing Width. The ring is dynamically balancedand its outer circumferential edge, when the ring is expanded. into thegroove, describes a true circle which is unbroken except for the slightdistance separating its ears. The holes 4 are for the reception of asuitable tool for contracting the ring so that `it can be removed fromits groove. The resiliency of the ring is such that when it is allowedto expand into the groove it will remain there firmly againstdisplacement and the width of the ring at all points throughout itscircumference is greater than the depth of the groove with the resultthat the ring extends into the barrel to form circumferentially thereofan abutment or shoulder.

The bobbin heads C are of conventional construction and can be made ofany desired and suitable material. Preferably, but not necessarily, theundersides of the heads are provided with a circumferential groove 6which telescopically receive the ends l of the barrels as appears inFig. 2. Each of the heads is provided with a plurality of countersunkholes for the reception of the heads of the screws 8 and is centrallyprovided with a passageway 9 which may carry a fitting or bushing I0.

A pairof retaining discs D of ring-like form having a diametersubstantially the same as the interior diameter of the barrel aredisposed within the barrel. One each of these discs is disposed at andin abutment with the inner face of a retaining ring B and is held by theretaining Vring against longitudinal movement in a direction outwardfrom the barrel. Each of the discs is provided with interior threadedpassageways which are disposed in registry with the screw passageways ofthe head and threadedly receive the threaded lower ends II of thescrews.

teriorly the barrel at each end is provided with a bushing E which ispreferably composed of Bakelite and at its outer end is provided with anoutwardly extending circumferential shoulder or iiange I2 whichoverhangs and abuts Ythe inner periphery of the outer face of itsrespective retaining disc D. Each f the bushings telescopicallyreceivesand retains an end of an inlterconnecting hollow tube I3. The tube I3and bushing E together with the head openings 9 provide a passagewaythroughout the length of the bobbin barrel and through the headsthereof.

The method of assembly and disassembly of lthe parts making up thebobbin will be apparent yfrom the foregoing description and the referredto figures of the drawing. The heads can be readily and quickly appliedto and removed from Ythe bobbin. When the screws are tightened down theretaining discs D are held in compression 'against the retaining ringsand the bushings E A*have their flanges I2 clampedV between the re--taining discs and the heads. The bushings thus being held 'againstmovement the interconnectving tube I3 displacement.

Obviously by lreason of the construction the assembly is rapid andsimple and it will be equally obvious that any worn or damaged parts 'ofthe bobbin can-be quickly and readily replaced.

With the retaining Yring being in dynamic balance, as explained, thebobbin is in balance Iand therefore will operate properly and smoothly'even at high speeds. Y

YThe Ycunstruction"illustrated and described, as 'well as .fthose laterto be described, have the attributes which vgive -to the bobbin theobjects land :advantages which have been previously recited. Y l

Should it be desirable for any reason the screws 43 could be replaced byrivets or other suitable like fastening elements.

The Y'bobbin in Fig. 4 illustrates a further :adaptation of the broadinventive concept in vthat fthe 'resilient retaining ring is used incombination witha retaining disc. Specifically there is a lbobbin barrelA of similar construction to that previously described and which carriesin its grooves I the resilient retaining rings Bhere- 'tofore described.In this instance the retaining disc lis of ring-like form and itscentral passageway'is threaded to threadedly receive a bushingfG formed'as an integral part of the bobbin head lH. vThe bushing G replaces thebushing Epreviously described. The previously described tube lI3 istelescopically received and retained by the'head bushings G at theopposite ends of the bobbin barrel. The vheads can carry the same'before-referred to ttings 9.

In the construction described the threaded 'engagement vof the headbushings with the retaining discs replaces the individual screws 8 ofthe L4other form of 'the invention and thus reduces the numberbf parts.Asiin the other form isV consequently held against of the invention theretaining disc is in a compressive state in the assembled bobbin.

The construction appearing in Fig. 5 illustrates one which is suitablefor application to takeups and differs only slightly from the rstdescribed form of the invention and accordingly similar referencenumerals are 'applied to similar 'parts with the result that there isthe bobbin the inner faces of the bobbin heads C. The gudgeons areprovided with a longitudinal bore I6 which is in registry with thecentral passageway I7 of'its respective and adjacent retaining disc. Thevpassageways of the retaining discs are in alignment with the open endsof the tubes I4. f Assembly and disassembly of this construction isobvious and will be fully understood :from the description given inrespect to the rst form of the invention and as in the rst form of theinvention the retaining rings are dynamically balanced and the retainingdiscs are put in a compressive state by the head retaining screws 8.

Modications of the invention can be made without departing from theinventive concept and the invention is accordingly to be limited onlywithin the scope of the Yllereinafter following and appended claims. Y

What I claim is:

1. In a bobbin, spool, or the like, an openended barrel, a resilientring Within the barrel adjacent an end Vthereof and having resilientinterlocking connection'with .the barrel, an element behind the ring andheld against outward movement from the'barrel by the ring, a 'head onthe barrel end, and means Vdetachably securing the head to the .elementand clamping the head to the barrel. Y

2. In a bobbin, spool, or the like, an open-ended barrel providedinternally adjacent an end with a circumferential groove, a resilientring having resilient interlocking connection with the groove anddetachable therefrom by contraction of the ring, an -element insertableinto the barrel and positionedbehind the ring and held against outwardmovement from the barrel end by the ring, a barrel head-on the barrelend, and means detachably interconnecting the head andthe element andclamping the head on 'the barrel end.

3. A construction as dened'in claim 2 wherein, the'ring has a pair offree ends each of which is provided Vwith meansfor the reception of aninstrument by which the ring may be contracted by the applicationof`pressure.

4. A construction as dened in claim 2 wherein, the barrel is circular incross sectional congurationand thering lwhen expanded into the groovedescribes a true circle.

5. A Vconstruction as defined in claim 2 wherein, the resilient ring Visdynamically balanced.

6. In a bobbin, spool, or the like, an openended barrel providedinternally adjacent 'each of its ends with a circumferential groove, apair of resilient eXpansible and contractable rings each having a pairof free ends, one each of said rings having resilient interlockingdetachable connection with one of said grooves, an element behind eachring and held thereby against outward movement from its respectivebarrel end, a headvon each barrel end, and means detachably securingeach of said heads with the adjacent element and clamping the heads tothe ends ci' the barrel.

7. A construction as defined in claim 6 wherein, said barrel heads areprovided With centrally positioned aligned openings, a bushingassociated and aligned with the inner end of each barrel head opening,each or said bushings being supported upon its adjacent element andhaving a head clamped between said element and the inner face of itsassociated barrel head, a hollow openended tube interconnecting theopposed ends of the bushings, said tube being supported and clampedbetween the said ends of said bushings.

8. In a bobbin, spool, or the like, an openended barrel, an elementinsertable into the barrel and positioned adjacent an end thereof, meansreleasably securing the element against outward movement through thebarre1 end, said element provided with a threaded opening, a barrel headprovided with a threaded stem, and the stem of the barrel havingthreaded engagement with the opening of the element for detachablyclamping f the head on the barrel end.

9. In a bobbin, spool, or the like, an openended barrel providedinternally adjacent an end with a circumferential groove, a resilientring split intermediate its length and contractable and expansible, saidring in its expanded state having interlocking connection with thegroove, an element insertable into the barrel and positioned behind thering and held thereby against outward movement from the barrel end, saidelement being provided with a threaded opening, the barrel head providedwith a threaded stem, and the stem of the barrel and the opening of theelement having threaded engagement and acting to clamp the barrel headon the barrel end.

10. In a bobbin, spool, or the like, an openended barrel providedinternally adjacent each of its ends with a circumferential groove, apair of resilient rings each split intermediate its length to render therings contractable and expansibie,

held thereby against outward movement from the barrel end, each of saidelements being provided with a threaded opening, a pair of barrel headseach provided with a threaded stem, and the stems of the barrel headsand the openings of the elements having threaded engagement and actingto clamp a barrel head on each of the barrel ends.

11. A construction as dened in claim 10 wherein, each of the barrelheads is provided with a passageway extending through the head and itsstem, and a hollow tubular element supported on and clamped between theopposed ends of the barrel head stems to provide a continuous passagewaythroughout the length of the bobbin.

12. In a bobbin, spool, or the like, an openended barrel providedinternally adjacent an end with a circumferential groove, a resilientring split intermediate its length to render it contract-able andexpansible, said ring in its expanded state having detachableinterlocking connection with the groove, an element insertable into thebarrel and positioned behind the ring and held thereby against outwardmovement from the barrel end, a barrel head on the barrel end, meansdetachably interconnecting the head and the element and clamping thehead on the barrel end, the barrel head provided with an opening, and agudgeon in said head opening and provided with a head disposed andclamped between the element and the inner face of the barrel head.

13. In a bobbin, spool, or the like, an openended barrel providedinternally adjacent each of its ends with a circumferential groove, apair of resilient rings split intermediate their length to render themcontractable and expansible, each of said rings having detachableinterlocking connection with a groove, an element behind each ring andheld thereby against outward movement from its respective barrel end, ahead on each barrel end, means detachably interconnecting each of saidheads with an element and clamping a head on each of the barrel ends,said barrel heads provided centrally with an aligned passageway, saidelements provided centrally with aligned passageways in alignment withthe head passageways, a gudgeon disposed in each head passageway andhaving a head disposed between an element and its adjacent barrel headand clamped between said members, a hollow tube supported by and clampedbetween the opposing faces of the elements, and the passgeways of saidtube being in alignment with the aforesaid passageways of the elementsand heads to provide a continuous passageway throughout the length ofthe bobbin and of the gudgeon.

14. In a bobbin. spool, or the like, :an openended barrel providedinternally adjacent each cf its ends with an inwardly extendingabutment, said abutments having quick detachable connection to thebarrel, an element behind each ci said abutments and held againstoutward movement from the barrel by the abutments, a barrel head on eachbarrel end, means detachably securing each of said heads with theadjacent element and clamping the heads to the ends of the barrel, saidheads being provided with central positioned aligned openings, a bushingassociated and aligned with the inner end of each barrel head opening,each of said bushing being supported upon the adjacent element andhaving a head clamped between said element and the inner face of itsassociated barrel head, a hollow open-ended tube interconnecting theopposed ends of the bushings, and said tube being supported upon andclamped between the said opposed ends of said bushings.

LESTER F. BURLEIN.

REFERENCES CTED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 501,427 Kent July 11, 1893701,934 Riddell June 10, 1902 946,757 Keeton Jan. 18, 1910 1,769,416Clinton July 1, 1930 1,801,054 Mossberg Apr. 14, 1931 1,948,430Robinson' Feb. 20, 1934 1,962,086 Bixby June 5, 1934

